1. A 14-year-old girl has had a cephalometric tracing performed as part of her orthodontic assessment. Using this tracing, how would her skeletal relationship be identified?
A Measure the angle formed by the A point, glabella, and B point
B Measure the angle formed by the A point, nasion, and B point
C Measure the angle formed by the A point, porion, and B point
D Measure the angle formed by the A point, sella turcica, and nasion
E Measure the angle formed by the anterior nasal spine, nasion, and sella turcica
Answer : B
2. An 9-year-old girl has been referred due to rotation and displacement of her upper left central incisor. A periapical radiograph of the central incisors reveals an unusual radio-opacity in the midline. What is the single most likely cause of the presenting complaint in this scenario?
A Complex odontoma
B Compound odontoma
C Conical supernumerary
D Supplemental supernumerary
E Tuberculate supernumerary
Answer :C
3. A 12-year-old boy attends your practice. The clinical features of his malocclusion include:
- A 10-mm overjet
- Class II division 1 incisor relationship
- A moderate Class II skeletal base
- Class II buccal segments
- Proclination of the upper incisors
- Well-aligned upper and lower arches.
You decide to refer him to an orthodontist. What is the most likely management for his malocclusion?
A Delay treatment until facial growth has completed, then provide orthognathic surgery
B Extraction of one unit in all four quadrants and fixed appliances
C Extraction of two units in the maxilla and non-extraction in the mandible prior to fixed appliances
D Headgear retraction of upper buccal segments
E Provision of a twin block functional appliance
Answer : E
As pt is young, its possible to utilise his growth to mx the malocclusion. Twin block timing is important, preferably before adolescent growth spurt begin.
4. A 13-year-old girl has an increased, complete overbite that is traumatizing the palatal mucosa. The intraoral orthodontic assessment shows the patient is in the permanent dentition and has an overjet of 8 mm, upper incisors of average inclination, mild upper and lower arch crowding, and an increased curve of Spee in the lower arch. Which single type of appliance is most appropriate in managing the first stage of orthodontic treatment?
A Lower removable appliance with a posterior bite plane
B Upper removable appliance with a flat anterior bite plane
C Upper removable appliance with a labial bow
D Upper removable appliance with a Robert’s retractor
E Upper removable appliance with Z springs on the upper incisors
Answer : B
5. A local dental practice is reviewing its storage requirements and looking to dispose of old study models. The practice manager has identified study models taken 4 years ago for a patient who received orthodontic treatment at the age of 11 years, who is no longer seen at the practice. What single piece of advice should be given to manage these models?
A Dispose of the models as clinical waste
B Dispose of the models as hazardous waste
C Securely send the models to her new dentist
D Store the models for a further 10 years
E Store the models for a further 14 years
Answer : D
Clinical records including study models should be kept a minimum of 11 years or till patient is 25 years old (whichever is longer) Pt was 11 at the time of impression so shud store till age 25. (14 years. But already store 4 years, so store for another 10 y) Applies to clinical notes, photos, Xrays